The transaction will be conducted through NRG Yield Operating LLC, an indirect subsidiary of NRY Yield, which will offer $400m worth of senior unsecured notes due in 2024.

NRG Yield’s announcement comes only a week after it said it would issue as many as 12.1 million new Class A shares, since priced at $54 a pop.

Together, the sale of the green bonds and the share issuance would be worth up to $1.05bn,